Which substance most likely consists of atoms that are able to slide past one another?
ice
honey
wood
cotton
Answer:
Ice
Explanation:
some Atoms in ice allow it to slide, and water will stop the friction from accruing as strongly, if you will.
Select the facts that support the endosymbiotic theory. Check All That Apply Mitochondria and chloroplasts have their own DNA. Mitochondria and chloroplasts have their own DNA. Mitochondria and chloroplasts often leave cells, surviving well on their own. Mitochondria and chloroplasts often leave cells, surviving well on their own. Mitochondria and chloroplasts are surrounded by two membranes. Mitochondria and chloroplasts are surrounded by two membranes. Mitochondria are about the same size as most bacteria.
Answer:
Mitochondria and chloroplasts have their own DNA
Mitochondria and chloroplasts are surrounded by two membranes
Mitochondria are about the same size as most bacteria
Explanation:
The endosymbiotic theory, also known as symbiogenesis, is a theory that explains how eukaryotic organisms have been formed from prokaryotic cells. This theory holds that eukaryotic organisms originated from prokaryotic organisms that engulfed another prokaryotic cell, creating thus an organism with multiple membranes. In consequence, eukaryotic organelles, including mitochondria and chloroplasts, would have evolved from these prokaryotic endosymbionts. Moreover, both mitochondria and chloroplasts contain their own genes which are localized in a circular chromosome, thereby supporting an endosymbiotic origin of both organelles. Finally, bacterial cells have 1 to 10 microns in length, while mitochondria have a similar size, thereby also supporting an endosymbiotic origin of this organelle.
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How many factors does a scientist want to differ between the experimental and control groups?
A) 2
B) 0
C) 1
D) 3
Answer:
C
Explanation:
The experimental and control group differ by only one factor for a scientist, and that is the independent variable.
A scientist will always try to isolate the effects that are due to a variable and keep every other variable constant. The variable that is manipulated in order to measure its effect is known as the independent variable. A control group usually forms the basis for measuring the effects of the independent variable. While the independent variable is varied in experimental groups, it kept at the zero level for the control group.
The correct option is, therefore, C.
Identical, or monozygotic, twins develop from a single egg fertilized by a single sperm. Monozygotic twins are genetically identical because they originate from a single zygote that split into two. Caroline Lost and her colleagues examined nine measures of social, behavioral, and cognitive ability in 1000 pairs of both male and female identical twins. Their study found that pairs of male twins tended to be more alike in their prosocial behavior, peer problems, and verbal ability scores than pairs of female twins. Which statement explains this observation?
Answer:
Female mammals undergo X-chromosome inactivation during early embryogenesis, thereby females are mosaic for the expression of X-linked genes
Explanation:
In mammals, males receive only one copy of the X chromosome and one Y chromosome, while females receive two copies of the X chromosome. The X chromosome contains approximately 1,000 key genes involved in development. In human female embryos, one of these two copies of the X chromosome is inactivated to prevent the imbalance caused by a double dose of X-linked genes, a phenomenon known as X-chromosome inactivation. The inactivation of one X-chromosome is a random process, thereby female cells are mosaics for all heterozygous X-linked alleles, where some embryonic cells have an inactive maternal X chromosome, while other cells have an inactive paternal X chromosome.
A scientist wants to monitor the amount of acid
precipitation falling into a watershed.
Which tool would be the best Tor the scientist to use?
O A. pH meter
O B. Dissolved oxygen sensor
O C. Satellite images
O D. Bioindicators
Answer:
A. pH meter
Explanation:
This is because a pH meter measures the acidity of water.
Answer:pH meter
Explanation:
The following are disadvantages of asexual reproduction
Answer:
Explanation:
As offsprings are genetically identical this means they look the same.The disadvantage is that there is no diversity or variation!
Which evolutionary advantage do tulips have over the snapdragons?
A. Greater variation in traits
B. Better able to adapt
C. No chance for mutation
D. Faster reproduction
What happens when a photon of light hits photosynthesis
Answer:
Chlorophyll strikes a photon of light, allowing an electron to be energized. the electron transport chain, the free electron passes, and the electron's energy is used to inject hydrogen ions into the thylakoid space, transferring the energy to the electrochemical gradient.
Explanation:
how those a living organism obtain energy from eating food
Answer:
Their cells are able to turn sunlight into food through a process called photosynthesis. In photosynthesis, producers combine carbon dioxide, water, and sunlight to produce oxygen and sugar (their food). Other organisms get energy by eating producers. ... It cannot directly use the Sun's energy to make food.
Explanation:
Answer: Their cells to turn sunlight into food through a process called photosynthesis. In photosynthesis producer combine carbon dioxide water, and sunlight to produce oxygen and sugar (tandem then makes there food).
Explanation:
Hope this helps
Which is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure? A. fossil B. metal C. mineral D. rock
Answer:
C. mineral
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states. The three (3) classical states of matter are;
1. Liquid: is the state of matter in which the physical substance can be poured and takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.
2. Gas: is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible, takes the shape of its container and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.
3. Solid: is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.
Mineral is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure. Also, minerals are homogeneous in nature with a defined chemical composition and characterized by a crystal structure comprising of ions, atoms, or molecules in an orderly arrangement.
Some examples of minerals are iron, copper, aluminum, tin, coal, quartz, feldspar, mica, etc.
17. Which of these processes is the result of the motion of particles in a gas or liquid?
A. conduction
B convection
C. insulation
D. radiation
Answer:
B
Explanation:
How many molecules of water are created when making a lipid?
Answer:
Three molecules
Explanation:
Since fats consist of three fatty acids and a glycerol, they are also called triacyclglycerols or triglycerides. Triacyclglycerols: Triacylglycerol is formed by the joining of three fatty acids to a glycerol backbone in a dehydration reaction. Three molecules of water are released in the process.
Answer: 3 molecules
Explanation: Hope that helps
tRNA brings amino acids to the
Answer:
Ribosomes ( a type of organelle)
Explanation:
tRNA brings amino acids to the Ribosomes
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Collect data: Blood carries many vital substances. Four of these are listed above the Microscopic view. Oxygen and sugar are needed by all body cells. Carbon dioxide and urea are waste products. What are the concentrations of each substance in this sample?
Oxygen:
Carbon Dioxide:
Sugar:
Urea:
Answer:
Explanation:
in the given sample of blood concentration of all the comonents is normal. the concentration of urea is 2.6 to 6.5 mM, concentration of carbon dioxide is 23-29 meq/L, while concentration of glucose ad oxygen are 0.9 g and 20.1 ml respectively.
Blood is the component of the circulatory system which is essential for the transport of gases and excretion of waste products. It is crucial for nutrient and oxygen supply to the body.
The concentration of oxygen was 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
The vital substance of blood can be explained as:Red blood cells are called erythrocytes that are responsible for oxygen transportation through the hemoglobin component to the body parts while on their way back it carries the carbon dioxide.Sugar is the major form of energy needed by the body for functioning which enters the blood from the liver.Urea is the waste complement removed with the help of blood collected from the liver and excreted by kidneys.Therefore, the normal concentration of blood substances is oxygen 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
Learn more about blood here:
https://brainly.com/question/256609
Using the Gizmo, determine how coal and petroleum (oil) are formed. Describe the steps required to form each fuel from atmospheric CO2.
Answer and Explanation:
Petroleum and coal are fossil fuels. The degradation of the earliest plants forms them. These dead plants started to pile up and form peat. Then the pressure and heat from various geological procedures convert peat into coal. Coal is a combustible rock which contains 50% carbon. Anthracite, Lignite and bituminous are the types of coal, and the formation of coal depends upon the quantity of hydrogen, oxygen and carbon. Petroleum exists naturally in liquid form and formed by decomposed organic matter. Fossil fuels can be refined into usable substances. Gasoline, tar, lubricants and many other products are obtained from petroleum. There are two steps, which required to form fuel from atmospheric carbon dioxide. In first step carbon dioxide is converted into carbon monoxide. In the second step, carbon monoxide combines with hydrogen to form hydrocarbon fuels. The formation of fuel is a natural process when animals respire carbon dioxide release in the atmosphere.
A farmer keeps his piglets in small pens and they have become aggressive towards one another. He gives the piglets large doses of antibiotics every day to prevent infection. Why is this dangerous?
options:
A. the antibiotics might cause cancer
B. the antibiotics might change the nutrition of the pork
C. the germs will grow resistant to the antibiotics
D. the antibiotics may stunt the growth of the piglets
what are the different types of cleaning agents?
detergent, acid, abrasive and degreasers.
I hope it helps you
help pls
Which species is this butterfly?
-----------------------------------------------------
Papilio glaucus
Papilio polyxenes
Danaus plexippus
Colias philodice
Answer:
Papilio Glaucus
Explanation:
You accidentally stub your toe on a chair when walking in a darkened room. A ________ - Word Answer Type your answer here (pain receptor) relays this information by sensory nerves _________ - Word Answer Type your answer here Please type your answer to submit ) to the _________ - Word Answer Type your answer here , which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the _______ - Word Answer Type your answer here to your leg muscles, which are acting as the ________ - Word Answer
Answer:
1. Receptor (nociceptor).
2. Afferent neurons.
3. Spinal cord.
4. Motor neurons.
5. Efferent neuron (effector).
Explanation:
In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.
In this scenario, you accidentally stub your toe on a chair when walking in a darkened room. A receptor (nociceptor) relays this information by sensory nerves in the afferent neurons to the spinal cord, which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the motor neurons to your leg muscles, which are acting as the efferent neuron (effector).
[FW.04H]A single computer microchip uses 10 gallons of water during its manufacture. A group of people suggested that the use of computers should be reduced to help conserve water. Which of these is the best alternative method to conserve water in manufacturing microchips?
Reduce the size of microchips.
Use graywater to manufacture microchips.
Collect rainwater and use it to make microchips.
Research ways to reduce water waste in making microchips.
Answer:
Option D, Research ways to reduce water waste in making microchips
Explanation:
The best way to conserve any natural resource is to conserve it at the source point and further make it apt for re use.
If the water waste is microchips is reduced then gallons of water will be saved. Also, devising engineering mechanism to reuse water in chip manufacturing industry will further reduce the water waste.
Hence, option D is correct
In the protein synthesis STEM case, which of the following mutations/errors created
a nonfunctional ADA enzyme (protein) which in turn caused deoxyadenosine to build
up?
A. tRNA error
B. Premature stop codon mutation
C. Active site mutation
Answer:
B. Premature stop codon mutation
Explanation:
Protein markers react with specific ______, which are proteins found in the immune system.
antigen
immunity
antibody
white blood cells
Protein markers react with specific antibody which are proteins found in the immune system.
Immune system generally produces antibodies to protect the body from foreign invaders (antigen) such as bacteria, viruses or pollen.
Proteins produced by the body immune system from the stores of immunoglobulin protein is known as Antibodies.
Antibodies works by recognizing and latching onto antigens in order to remove them from the body.
The correct answer is Protein markers react with specific antibody in the body.
Learn more about Antibody & Antigen here brainly.com/question/20871948
What is one way the Green Revolution impacted food production?
Answer:
Loss of Small Farms to Large Commercial Farms
The Green Revolution's method to increase food production and eliminate hunger is to introduce technologies such as bio-engineered seeds and chemicals that are developed to increase yields.Explanation:
I hope it's help ƪ(‾.‾“)┐
The glucose transporter used by cells to obtain glucose from the media is a protein embedded in the membrane. When researchers first started to investigate the glucose transporter's structure they had trouble because it seemed to have 2 differnet shapes! Eventually they realized that the glucose transporter changes shape as it moves glucose into the cell but does not require energy to do it's work. Which of the following is the best description for the glucose transporter?
a. It's a carrier protein doing facillitated diffusion
b. It's a carrier protein doing active transport
c. It's a protein channel doing facillitated diffusion
d. It's a protein channel doing active transport
Answer:
a. It's a carrier protein doing facillitated diffusion
Explanation:
Facilitated diffusion may be defined as the transportation of molecules from a high concentration to a low concentration that is down the concentration gradient without input of the energy. Whereas the active transport is transportation of the molecules from the low concentration to the high concentration which is against concentration gradient by the membrane protein.
The glucose transportation process requires membrane protein for the transport and does not require any energy. Therefore, it is carrier protein which is doing the facilitated diffusion.
Refer to the experimental set-up above. What is the purpose of the overturned bucket (note it is solid, not clear) in part A?
Answer:
The bucket is taking in oxygen which makes the water inside the hot and thermometer solid its not clear because its taking in energy.
Answer:
hhahahha i need my points on my alt account
Explanation:
What are 5 producers in the ocean?
You are monitoring Birch Lake,
A. Snails and crayfish would not survive in Birch Lake at a pH of 6.2.
B. Once they die out, the walleye will disappear as well.
What features allowed you to distinguish some of the organism on set 2
we cannot see the picture?
is Professional athletic ability inherited or acquired?
O Inherited
O Acquired
2. is color blindness inherited or acquired
A. inherited
B. Acquired
Answer:
both answers are b i think
Explanation:
